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Fourstrokenewb

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About Fourstrokenewb

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  1. Fourstrokenewb

    Used Drz400SM - Need help

    My money says the person that owned it wheelied it for 12 miles and blew the motor up due to oil starvation. I have seen them in the bike shops in Richmond, Va. I have also had friends that did it to their bikes.
  2. Fourstrokenewb

    1978 XR75

    That is kind of interesting that the CRF80 engine fits in a 1978 frame. I would like to keep it stock, but that is absolutely an option. RE the carb, this thing is a total mess. I have had the same experience trying to make old work well again. Wanted to stay away from a chinese carb . . . but that may have to do.
  3. Fourstrokenewb

    1978 XR75

    Thanks guys for your responses. I saw the Forseti pistons. Price looks almost too good to be true. They ship from AUS. Have ya'll had any experience with Forseti? I found this. https://store.xrminiracer.com/catalog/category/5073941. Price in line with NOS price. My thinking is that the bottom end SEEMS good, but I am not 100% sure at this point Maybe the less expensive option better . . . the cylinder bore is trashed. It may need a resleeve. I am going to have to work more on carby. Maybe drop it in a bucke of scale remover.
  4. Fourstrokenewb

    1978 XR75

    My apologies if this topic has been covered. My son recently found a 1978 XR75. He got it for 150 bucks. I am not going to lie, the little bike looked like it had been thrown n a river. But it was complete, and it was a bike that every kid n the 70's wanted. ( I had a '74) So we figured it was worth restoring. Bottom end seems good. Main bearings solid. Gears shift. Pulled clutch cover . . . clean. First problem . . . carburetor. Never seen anything like this. Full of white cr@p. After a while in an ultrasonic cleaner still looking sad. It may hit the trash can. The redeeming fact this is that it is not overly complicated like an FCR . . . . so it may yet be salvaged. Second problem cylinder . . . . pitted, rusted.So badly that the piston was oxidized into place. The rings were not movable. Cylinder discontinued. Sketchy availability of pistons. Here is my question. If I got a resleeve is there ANYBODY that sells pistons for these bikes? I heard Wiseco did, but i see no indications of that. Does anyone know if there is any bike in Honda's inventory that has a piston that would work? I have seen kits for 73-76 engines but I know the cylinder was redesigned in 77. Could I re sleeve and bring to those specs? Other considerations, skirt length and valve reliefs? Any ideas on his?? Thanks
  5. Fourstrokenewb

    DRZ-400e Engine Vibration

    +1 on the motor mounts. My kid bought a riding lawnmower with loose motor mounts. Sounded like a mule kicking a tin walled shed. I' sure a 38 hp fourstroke would make some racket. Tightened them up and it sounded good. If you do get a MCCT, be careful.
  6. Fourstrokenewb

    2007 YZ250 good deal or no?

    I came to the party late. If you have not bought yet see if owner will pull ignition cover - gas and oil pours out = bad try to wiggle crank - up and down; knock knock = bad start it . . . see if it cleans out lots of smoke could be too rich . . . . . or it could be a leaky trans side main seal look it over - real good hardware store parts = bad - I am a stickler. I would never go to lowes to buy bolts for my bike . . . Leaky forks / shocks . . . bad Look at little stuff too - spokes? are they loose / seized How about the air valves on the tires - have caps?, filled with dirt? - if so owner is a bone head. He did not care enough for that, who knows what else he did not care for? In richmond market 2008 450F's are on craigs list for 3500. found a 2001 YZ250 2 stroke, 1700 . . . needed work, found a 450F 2008 - 2200 . . . Don't fall in love with the bike at this price. If you can wrench pretty good, figure out what you want to take on. Loose main bearings may not be too hard to fix, but the less you have to do the better. All that being said, buying a two stroke is a lot more idiot proof that buying a four stroke. I ride a four now, but I cannot say I will not go back to a two stroke.
  7. Fourstrokenewb

    DRZ400E Waterpump

    Yep, that is where I was going with it. In the Hot Rods kit, the disk is bound to the rubber part . . . . . . . . in my motor, not so much . . . . the ceramic disk and the rubber part are two pieces. So just to make sure I copy right, the guidance for the RTV fix is that I literally vulcanize the rubber side of the ceramic disk to the impeller? Think it makes sense just to preempt "whatever might happen" and just RTV the Hot Rods part in place from the git go?? Looks like I am learning lots about four strokes . . . I never had anything like this happen on any of my race bikes. (All were 2 stroke) I just hope I did not damage anything else trying t find the sweet spot on my cam chain adjustment . . . . . Thanks for helping me work through this. PC
  8. Fourstrokenewb

    DRZ400E Waterpump

    So I took the pump apart. The things that struck me 1. the white ceramic part had a sort of worn (stained black area) where it had been in contact with the black (sprung side) of the mechanical seal. 2. the white ceramic seal came easily out of the rubber pocket, which was kind of stuck to the back of the impeller. And the rubber pocket fit loosely. 3. looking at a Hot Rods repair kit that I had laying around, I would not swear to it, but the ceramic disk looked thicker (anecdotally I need to take a caliper to it) 4. once again, anecdotally, the spring on the Hot Rods kit seemed to be stronger or maybe longer. Looking at this thing, the way the mechanical seal works, it relies heavily on spring tension, if the spring was too short, fatigued or the ceramic disk was worn down for an reason, it would leak. On point number 1, this thing had not leaked at all, until I overheated it, idling trying to find the sweet spot on a new MCCT that I installed. It puked some coolant out (actually blew the coolant recovery tank out bc the vent was clogged, but that is another story. Perhaps the overheating episode screwed up the rubber ceramic disk holder?? (point 2) I WISH i could get the pump apart without laying wast to everything in the process, I would put in the HotRods seal.
  9. Fourstrokenewb

    DRZ400E Waterpump

    Thanks for your responses . . . . . I will a take it apart and see what I find.
  10. Fourstrokenewb

    DRZ400E Waterpump

    Ok, be advised I have searched and found lots of info about RTV fixes and all . . . . . . . I am trying to figure out if my situation is unique . . My 2001 DRZ400 started leaking about three rides after I bought it. "So it is a 2001 after all", I thought, "I will put a new waterpump in it". I pulled the old one and there were grooves on the shaft. Sure looked work out to me. I coughed up 120 bucks for a new OEM pump and installed. The leak went away. This was April. Fast forward to October, the stupid leak is back. Seemingly worse than it was before. Facts Several rides : One on a motocross track . . . . Yes a motocross track, it handled pretty well. Overheated once - Trying to find sweet spot adjusting the newly purchased MCCT. Ironically the coolant tank blew up . . . because the vent hose outlet was clogged. Now I have a new coolant tank. Antifreeze - PEAK (50/50 mix) - The bottle said it was good for all cars and motorcycles - I was looking for phosphate fee and silicate free. Bottle said nothing about it. But from what I read, phosphates and silicates are a thing of the past. Questions Is this typical behaviour of these water pumps? Are they really so poorly designed that they HAVE to be RTVed? Think the overheating could have been a factor? When I was an MX racer, I always ran Prestone . . . . never had a leak at all. Never replaced a waterpump. In fact never used distilled water. What is so unique about this? Is it just that the four strokes run so much hotter?? Actions I am going to pull it apart (again) this afternoon possibly and take a look. If I find anything interesting I will post pics. Any thoughts? Thanks
  11. Fourstrokenewb

    Water pump impeller gone?

    So I went out to my shed today and there was a puddle o the floor . Coolant . . . . four rides on this new waterpump. So now I guess I'm going in . . . . . Rotella to the Recyling center or not. . . . Does this sound consistent with a pump needing the RTV fix . . . .? This bike is getting me ticked,
  12. Fourstrokenewb

    How do you put the drz on a stand

    I just made a comment and never answered the question. Plus 1 for the Harbor Freight "Motocross Motorcycle" stand. 20 bucks.
  13. Fourstrokenewb

    How do you put the drz on a stand

    Old Schmold - these things are just flat HEAVY
  14. Fourstrokenewb

    Water pump impeller gone?

    On the coolant angle . . . . . I replaced my warterpump in the spring of this year because it was leaking (out of the weep hole) . . . . I rode it about four times, the last time pretty hard on an MX track . . . . . Now it is leaking again. I had been running Peak antifreeze. (50/50) . . . . . says on the bottle that it is good for cars and motorcycles . . . . . . it says nothing about silicates, and I read that they never put that stuff in antifreeze any more. I have also read about the "RTV" fix. I have had Yamaha's with water cooling and I never had to do anything like this. The only other thing I need to mention, it did overheat once while I was fumbling around trying to get my new MCCT installed. It puked about a cup or so of water out. Think that might have done it? I really don't want to send two quarts of semi fresh Rotella to the recycling center . . . . I cannot believe that Suzuki can't get this right . . . . after all water cooling has been around since what 1986?????
  15. Fourstrokenewb

    Mcct install TDC instructions ambiguous

    Yeah, looking back at what I originally posted, I could see how you would think that I misunderstood. What i did not say, was that I did find TDC, with the cams at 10 and 2 o clock, and I removed the ACCT then. . As you said also, if you really know what you are doing, you can listen to the engine as you rotate it. You can hear the intake impulse at the carb. Next TDC is with both valve closed, although there is a compression release. Being that this is a 2001, I wanted to check my valve clearances, so I wanted to remove the valve cover anyway. They were in spec. My confusion was the tension adjustment procedure . . . . . you can see from my original post what my issue was. I am a 2 stroke guy from way back. Thanks
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